<template>
  <div>
<!--    面包屑区域-->
    <el-breadcrumb  separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!--  卡片视图区域-->
    <el-card class="box-card">
<!--      搜索与添加区域-->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input
              placeholder="请输入内容"
              v-model="queryInfo.query"
              clearable
              @click="getUserList">
            <el-button
                slot="append"
                icon="el-icon-search"
                @click="getUserList">
            </el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>

<!--      用户列表区域-->
        <el-table
            :data="userlist"
            border
            stripe>
          <el-table-column type="index" label="#"></el-table-column>
          <el-table-column prop="username" label="姓名"></el-table-column>
          <el-table-column prop="email" label="邮箱"></el-table-column>
          <el-table-column prop="mobile" label="电话"></el-table-column>
          <el-table-column prop="role_name" label="角色"></el-table-column>
          <el-table-column prop="mg_state" label="状态">
            <template v-slot="scope">
              <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
            </template>
          </el-table-column>
          <el-table-column label="操作">
            <template v-slot="scope">
<!--              修改按钮-->
            <el-tooltip
                  effect="dark"
                  content="修改角色"
                  placement="top"
                  :enterable="false">
              <el-button
                  type="primary"
                  icon="el-icon-edit"
                  size="mini"
                  @click="showEditDialog(scope.row.id)">
              </el-button>
            </el-tooltip>
<!--              删除按钮-->
              <el-tooltip
                  effect="dark"
                  content="删除角色"
                  placement="top"
                  :enterable="false">
                <el-button
                    type="danger"
                    icon="el-icon-delete"
                    size="mini"
                    @click="removeUserById(scope.row.id)">
                </el-button>
              </el-tooltip>
<!--              分配角色按钮-->
              <el-tooltip
                  effect="dark"
                  content="分配角色"
                  placement="top"
                  :enterable="false">
                <el-button
                    type="warning"
                    icon="el-icon-setting"
                    size="mini"
                    @click="setRole(scope.row)">
                </el-button>
              </el-tooltip>
            </template>
          </el-table-column>
        </el-table>

<!--      分页区域-->
      <div class="block">
        <el-pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="queryInfo.pagenum"
            :page-sizes="[1, 2, 5, 10]"
            :page-size="queryInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total">
        </el-pagination>
      </div>
    </el-card>

<!--    添加用户对话框-->
    <el-dialog
        title="添加用户"
        :visible.sync="addDialogVisible"
        width="50%"
        @close="addDialogClosed">
<!--      内容主体区域-->
      <el-form
          ref="addFormRef"
          :rules="addFormRules"
          :model="addForm"
          label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
<!--      底部内容-->
      <span slot="footer" class="dialog-footer">
    <el-button @click="addDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="addUser">确 定</el-button>
  </span>
    </el-dialog>

<!--    修改用户的对话框-->
    <el-dialog
        title="修改用户"
        :visible.sync="editDialogVisible"
        width="50%"
        @close="editDialogClosed">
      <el-form
          ref="editFormRef"
          :model="editForm"
          :rules="editFormRules"
          label-width="70px">
        <el-form-item label="用户名">
          <el-input disabled v-model="editForm.username"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

<!--分配角色的对话框-->
    <el-dialog
        title="分配角色"
        :visible.sync="setRoleDialogVisible"
        width="50%"
        @close="setRoleDialogClosed">
      <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色：{{userInfo.role_name}}</p>
        <p>分配新角色：
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
                v-for="item in rolesList"
                :key="item.id"
                :label="item.roleName"
                :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
    <el-button @click="setRoleDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
  </span>
    </el-dialog>
  </div>
</template>

<script>
  export default {
    name: "Users",
    data() {
      //验证邮箱的规则
      let checkEmail = (rule, value ,callback) => {
        //验证邮箱的正则表达式
        const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
        if (regEmail.test(value)) {
          //合法的邮箱
          return callback()
        }

        callback(new Error('请输入合法的邮箱'))
      }
      //验证手机号的规则
      let checkMobile = (rule, value ,callback) => {
        const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
        if (regMobile.test(value)) {
          return callback()
        }
        callback(new Error('请输入合法的手机号'))
      }
      return {
        queryInfo: {
          query: '',
          //当前的页数
          pagenum: 1,
          //当前每页显示多少条数据
          pagesize: 2
        },
        userlist: [],
        total: 0,
        //控制添加用户对话框的显示与隐藏
        addDialogVisible: false,
        //添加用户的表单数据
        addForm: {
          username: '',
          password: '',
          email: '',
          mobile: ''
        },
        //添加用户表单的验证规则对象
        addFormRules: {
          username: [{
            required: true,
            message: '请输入用户名',
            trigger: 'blur',
          },{
            min: 3,
            max: 10,
            message: '用户名的长度在3~10个字符之间',
            trigger: 'blur',
          }],
          password: [{
            required: true,
            message: '请输入密码',
            trigger: 'blur',
          },{
            min: 3,
            max: 10,
            message: '密码的长度在6~10个字符之间',
            trigger: 'blur',
          }],
          email: [{
            required: true,
            message: '请输入邮箱',
            trigger: 'blur',
          },{
            validator: checkEmail,
            trigger: 'blur',
          }],
          mobile: [{
            required: true,
            message: '请输入手机号',
            trigger: 'blur',
          },{
            validator: checkMobile,
            trigger: 'blur',
          }]
        },
        //控制修改用户对话框的显示与隐藏
        editDialogVisible: false,
        //查询用户信息的对象
        editForm: {},
        //修该表单的验证规则对象
        editFormRules: {
          email:[{
            required: true,
            message: '请输入邮箱',
            trigger: 'blur',
          },{
            validator: checkEmail,
            trigger: 'blur',
          }],
          mobile: [{
            required: true,
            message: '请输入手机号',
            trigger: 'blur',
          },{
            validator: checkMobile,
            trigger: 'blur',
          }]
        },
        //控制角色分配对话框的显示与隐藏
        setRoleDialogVisible: false,
        //需要被分配角色的用户信息
        userInfo: {},
        //所有角色的数据列表
        rolesList: [],
        //已选中的角色id值
        selectedRoleId: ''
      }
    },
    created() {
      this.getUserList()
    },
    methods: {
      //更新数据
      async getUserList() {
        const {data: res} = await this.$http.get('users',{
          params: this.queryInfo
        })
        if(res.meta.status !== 200) {
          return this.$message.error('获取用户列表失败')
        }
        this.userlist = res.data.users
        this.total = res.data.total
      },
      //监听pagesize改变的事件
      handleSizeChange(newSize) {
        this.queryInfo.pagesize = newSize
        this.getUserList()
      },
      //监听 页码值 改变的事件
      handleCurrentChange(newPage) {
        this.queryInfo.pagesize = newPage
        this.getUserList()
      },
      //监听 switch 开关状态的改变
      async userStateChanged(userInfo) {
        const{data: res} = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
        if(res.meta.status !== 200) {
          userInfo.mg_state = !userInfo.mg_state
          return this.$message.error('更新用户状态失败！')
        }
        this.$message.success('更新用户状态成功！')
      },
      //监听添加用户对话框的关闭事件
      addDialogClosed() {
        this.$refs.addFormRef.resetFields()
      },
      //点击按钮，添加新用户
      addUser() {
        this.$refs.addFormRef.validate(async valid => {
          if (!valid) return
            //可以发起添加用户的网络请求
          const{data: res} = await this.$http.post('users',this.addForm)
          if (res.meta.status !== 201) {
            return this.$message.error('添加用户失败')
          }
          this.$message.success('添加用户成功')
          //隐藏添加用户的对话框
          this.addDialogVisible = false
          //重新获取用户列表
          this.getUserList()
        })
      },
      async showEditDialog(id) {
        const {data:res} = await this.$http.get('users/' + id)
        if (res.meta.status !== 200) {
          return this.$message.error('查询用户信息失败')
        }
        this.editForm = res.data
        this.editDialogVisible = true
      },
      //监听添加用户对话框的关闭事件
      editDialogClosed() {
        this.$refs.editFormRef.resetFields()
      },
      //修该用户信息并提交
      editUserInfo() {
        this.$refs.editFormRef.validate(async valid => {
          if (!valid) return
          //发起修改用户信息的数据请求
          console.log(this.editForm)
          const {data:res} = await this.$http.put(`users/${this.editForm.id}`,
              {
                email:this.editForm.email,
                mobile: this.editForm.mobile
              })
          if (res.meta.status !== 200) {
            return this.$message.error('更新用户信息失败')
          }

          //关闭对话框
          this.editDialogVisible = false
          //刷新数据列表
          this.getUserList()
          //提示修该成功
          this.$message.success('更新用户信息成功')
        })
      },
      //根据用户的ID删除对应的用户信息
      async removeUserById(id) {
        //弹窗询问用户是否删除数据
          const confirmResult = await this.$confirm
          ('此操作将永久删除该用户, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err)
        //如果用户确认删除，则返回值为字符串 confirm
        //如果用户取消了删除，则返回值为字符串 cancel
        if (confirmResult !== 'confirm') {
          return this.$message.info('已取消删除')
        }
        const{data:res} = await this.$http.delete(`users/${id}`)
        if (res.meta.status !== 200) {
          return this.$message.error('删除用户失败！')
        }
        this.$message.success('删除用户成功！')
        this.getUserList()
      },
      async setRole(userInfo) {
        this.userInfo = userInfo

        //在展示对话框之前获取所有角色的列表
        const {data:res} = await this.$http.get('roles')
        if (res.meta.status !== 200) {
          return this.$message.error('获取角色列表失败')
        }
        this.rolesList = res.data
        this.setRoleDialogVisible = true
      },
      //点击按钮，分配角色
      async saveRoleInfo() {
        if(!this.selectedRoleId) {
          return this.$message.error('请选择要分配的角色')
        }

        const {data:res} = await this.$http.put(`users/${this.userInfo.id}/role`,{rid:this.selectedRoleId})

        if(res.meta.status !== 200) {
          return this.$message.error('更新角色失败')
        }
        this.$message.success('更新角色成功')
        this.getUserList()
        this.setRoleDialogVisible = false
      },
      //监听分配角色对话框的关闭事件
      setRoleDialogClosed() {
        this.selectedRoleId = ''
        this.userInfo = {}
      }
    }
  }
</script>

<style lang="less" scoped>
</style>